From: Markus Schöpflin (markus.schoepflin_at_[hidden])
Date: 2005-06-16 05:55:42


Jonathan Wakely wrote:

> On Thu, Jun 16, 2005 at 11:43:08AM +0200, Markus Sch?pflin wrote:

>>I'm not really sure but isn't there a friend declaration missing in the
>>fixed_mapping class?
>>
>>Given the following code:
>>
>>template< ... >
>>class fixed_mapping
>>{
>> typedef std::pair<Key,Value> elem_type;
>> ...
>> struct p1 : public std::binary_function<elem_type,Key,bool>
>> {
>> bool operator()( elem_type const& x, Key const& y ) const
>> { return Compare()( x.first, y ); }
>> };
>> ...
>>};
>>
>>doesn't this require p1 to be a friend of fixed mapping to be able to
>>access elem_type in it's operator()?

> Strictly, yes. But many compilers implement the resolution to DR45
> already:
> http://www.open-std.org/JTC1/SC22/WG21/docs/cwg_defects.html#45

Gennadiy, would you mind if I add the two missing friend declarations (for
p1 and p2) to satisfy compilers which require this?

Markus